Smithsonian Folkways Magazine: you can look for all kinds of folk music (even Scottish...listed under "Celtic"), and look at the liner notes to see if it's a CD you'd like.
41 FREE Resources to use when Teaching about 'The Blues'
Bring nature and culture from around the world to your students—and skip the costs. The Virtual Field Trips collection offers apps, videos, and Multi-Touch books from places like MoMA, the Smithsonian, the Met, the Palace of Versailles, the Grand Canyon, the U.S. National Archives, the Library of Congress, and the Royal Opera House. Whether you’re teaching the arts, history, or the sciences, these resources present opportunities for interactive activities in almost any lesson.